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United States Patent | 5,288,139 |
Singleton ,   et al. | February 22, 1994 |
A control for an electropneumatic braking system applies a step function to a electronically operated proportional modulator to improve transient response. The current is controlled by a treadle operated signal generator operated by the vehicle operator and by actual feedback braking pressure as generated by a pressure sensor which senses braking pressure. The system includes a master controller which receives and processes information from the operator operated treadle operated signal generator and transmits desired pressure signals to wheel controllers which independently control each wheel of the vehicle.
Inventors: | Singleton; William A. (Grafton, OH); Burns; Robert D. (North Royalton, OH) |
Assignee: | Allied-Signal Inc. (Morristown, NJ) |
Appl. No.: | 894386 |
Filed: | June 5, 1992 |
Current U.S. Class: | 303/15; 303/20 |
Intern'l Class: | B60T 013/68 |
Field of Search: | 303/3,7,9.61,9.66,9.69,15-17,20,115.2,DIG. 1-DIG. 4 364/426.01,426.02 188/180,182 |
4749238 | Jun., 1988 | Singleton et al. | 303/15. |
4787683 | Nov., 1988 | Singleton | 303/110. |
4802562 | Feb., 1989 | Kuroyanagi et al. | 303/20. |
Foreign Patent Documents | |||
0204483 | Dec., 1986 | EP. | |
0386952 | Sep., 1990 | EP. | |
0467112 | Jan., 1992 | EP. | |
8902383 | Mar., 1989 | WO. |